You know, I'm a Smalltalker, but I have a deep respect for Lisp and always love reading about it. I just ran across this great thread of some Lispers talking about their big aha! moments.
One of these days soon I'm going to have to try and do a small web application in Lisp or Scheme, I love Smalltalk, but I still drool over the idea of macros and generic functions. I guess for a Lisper, Slime is the environment to learn, but I shudder at losing my Smalltalk environment and having to learn emacs. I've always felt Lisp is the superior language and Smalltalk is the superior environment. If any of you are proficient in both Lisp or Scheme and Smalltalk, I'd love to hear from you.